A traction device for facilitating cable laying

Abstract

The application relates to the technical field of power equipment, and discloses a traction device facilitating cable laying, which comprises a traction machine and a wire feeder, the wire feeder comprises a bottom plate, a motor and a conveying belt are arranged at the top end of the bottom plate, the motor provides power for the conveying belt through a steering gear, a wire pressing assembly is arranged at the top end of the conveying belt, front clamping assemblies, hydraulic rods and rear clamping assemblies which are of the same structure are arranged at the front and back of the conveying belt, a plurality of telescopic rods are circumferentially arranged on the inner walls of left and right clamping rings, rollers which are in rolling cooperation with cables are arranged at the top ends of the telescopic rods, and a miniature hydraulic pump is inlaid in the rollers; a spiral scraper is arranged at the front end of the left and right clamping rings, hydraulic oil is delivered to a torsion eliminator by the miniature hydraulic pump in the roller, the torsion direction is monitored in cooperation with a direction detection assembly, and the torsion is released through the torsion eliminator, so that the curling stress is continuously eliminated during the cable conveying process, the cable is laid without deformation, and the effect of improving the cable laying construction quality is achieved.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, specifically to a traction device that facilitates cable laying. Background Technology

[0002] In cable laying construction, the traction device is one of the core equipment. Existing cable traction devices usually include a base plate, a mounting base, and a clamping mechanism on the mounting base. When in use, the cable is inserted into the clamping mechanism and clamped, and then the device or cable is pulled by an external traction device to realize the laying of the cable in the trench, cable tray or tunnel. However, in actual construction, cables are usually stored and transported on cable reels when they leave the factory. After a long period of storage, the cables develop an inherent spiral curl memory. When the cable is pulled out of the cable reel by the traction device and transported forward in a straight line, this curl memory generates a spiral residual torsional stress inside the cable.

[0003] Meanwhile, the clamps of existing traction devices are rigid fixed structures. The torsional stress cannot be released when the cable passes through the clamps, but accumulates segment by segment along the length of the cable. After the cable is laid, the accumulated torsional stress is slowly released in an unrestrained state, causing the laid cable to arch, shift laterally, twist, or even bend in the trench or cable tray, which seriously affects the construction quality and may even require rework. This problem is particularly prominent in cable types with high rigidity, such as high-voltage large-section cables and armored cables. Summary of the Invention

[0004] The purpose of this invention is to provide a traction device that facilitates cable laying, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, a traction device for convenient cable laying is provided, comprising a traction machine and a cable conveyor. The cable conveyor includes a base plate, with a motor, a hydraulic energy storage device, and a conveyor belt at the top of the base plate. The motor provides power to the conveyor belt through a steering mechanism. A cable pressing assembly is provided at the top of the conveyor belt. A front clamping assembly, a hydraulic rod, and a rear clamping assembly with identical structures are provided at the front and rear of the conveyor belt. The front clamping assembly includes a symmetrically arranged left clamping ring and a right clamping ring. A left hydraulic rod and a right hydraulic rod are respectively provided at the opposite ends of the left and right clamping rings. Multiple telescopic rods are provided circumferentially on the inner walls of the left and right clamping rings. A roller that rolls with the cable is provided at the top of the telescopic rod, and a miniature hydraulic pump is embedded in the roller. A spiral scraper is provided at the front end of the left and / or right clamping rings.

[0006] Furthermore, the front clamping assembly and the rear clamping assembly are provided with clamping frames at their bottom ends. The clamping frames are fixed to the base plate by bolts. A direction detection assembly extends outward from the front end of the clamping frame. The direction detection assembly includes a mounting base extending outward from the base plate. A set of parallel fixed connecting rods extends upward from the mounting base. A detection outer ring is integrally connected to one end of the fixed connecting rods. A scale is provided on the end face of the detection outer ring. A detection inner ring is installed inside the detection outer ring through a bearing. A detection pointer is fixedly connected to the outer wall of the detection inner ring.

[0007] Furthermore, the conveyor belt includes a set of parallel baffles, with a drive roller and a driven roller arranged in parallel axes between the opposite faces of the two baffles. The drive roller is fixedly connected to the output shaft of the steering gear by a pin, and the conveyor belt also includes a conveyor strip that wraps around the drive roller and the driven roller.

[0008] Furthermore, the conveyor belt is long and has a downward-curved arc section in the middle, the curvature of which is less than the outer diameter curvature of the cable.

[0009] Furthermore, the pressure line assembly includes a fixing component and a pressure line module. The fixing component includes multiple fixing rods welded or screwed to the enclosure plate. A connecting rod is fixed between two fixing rods in the width direction. A pressure line module is provided on the opposite side of the two connecting rods in the length direction. The pressure line module includes a hydraulic damping rod and a pressure line baffle is provided at the bottom end of the hydraulic damping rod.

[0010] Furthermore, a pressure roller that cooperates with the conveyor belt is provided between the opposite surfaces of the pressure baffle. The pressure roller is spindle-shaped, and the curvature of the pressure roller on the vertical plane is the same as the curvature of the arc segment of the conveyor belt.

[0011] Furthermore, the pressure assembly also includes two torque eliminators symmetrically arranged along the pressure roller. Each torque eliminator includes a fixed bushing, and a set of symmetrically arranged rotating bearings are provided on the inner wall of the fixed bushing. The opposite ends of the rotating bearings are provided with sealing rings integrally connected to the fixed bushing. The area enclosed by the sealing rings constitutes a rotating cavity. The outer wall of the fixed bushing is provided with a hydraulic inlet and a hydraulic outlet communicating with the outside. A torque ring is provided on the inner wall of the rotating bearing.

[0012] Furthermore, the outer wall of the torsion ring is provided with a toggle plate, and the inner wall of the torsion ring is provided with a plurality of elastic pressure rods in the circumferential direction, with a clamping plate at the top of the elastic pressure rod.

[0013] Furthermore, the tractor includes a chassis, a diesel engine mounted on the chassis, a set of tracks arranged in pairs at the lower end of the chassis, a steering wheel for controlling direction and a seat for riding on the chassis, and a towing clamp at the rear end of the chassis.

[0014] Furthermore, the traction clamp includes a scissor bracket hinged to the machine body. The lower end of the scissor bracket is provided with a hollow sliding sleeve. A through hole communicating with the inside and outside is opened on the sliding sleeve. Symmetrically arranged sliding rods are provided inside the sliding sleeve. The sliding rods are connected and constrained within the sliding sleeve by springs. The sliding rods are connected to the scissor bracket through hinged connecting rods. Symmetrical clamps are hinged to the lower end of each sliding rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By continuously supplying hydraulic oil to the torque eliminator through the micro hydraulic pump embedded in the roller, and cooperating with the direction detection component to provide feedback on whether the cable is twisted, the torque eliminator is rotated to release the coiled torsional stress, so that the internal residual torsional force is eliminated throughout the cable transportation process, thereby reducing rework and ensuring the neatness of the finished cable.

[0016] 2. By setting spiral scrapers at the front ends of the left and right clamping rings of the front clamping assembly, the inner edge of the scraper protrudes from the inner wall of the clamping ring and forms a clearance fit with the cable surface. Before the cable enters the clamping ring, the scraper removes the floating dust and loose attachments on the cable surface. The scraped debris is guided to the outside of the clamping ring along the spiral direction of the scraper and discharged, avoiding the accumulation of debris at the entrance of the clamping ring and affecting the clamping effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the traction machine of the present invention; Figure 2 for Figure 1 AA diagram; Figure 3 This is an isometric view of the transmitter of the present invention; Figure 4 This is a schematic diagram of the orientation detection component of the present invention; Figure 5 This is a top view of the transmitter of the present invention; Figure 6 For the present invention Figure 5 AA diagram; Figure 7 For the present invention Figure 5 A schematic diagram of a BB (Baby Window). Figure 8 This is an isometric view of the torque eliminator of the present invention; Figure 9 For the present invention Figure 8 A schematic diagram of CC.

[0018] In the diagram: 1. Tractor; 2. Diesel engine; 3. Track; 4. Steering wheel; 5. Seat; 6. Traction clamp; 601. Scissor lift bracket; 602. Sliding rod; 603. Sliding sleeve; 604. Spring; 605. Clamp; 7. Base plate; 8. Steering gear; 9. Electric motor; 11. Clamping frame; 12. Hydraulic rod; 1201. Left hydraulic rod; 1202. Right hydraulic rod; 13. Front clamping assembly; 1301. Left clamping ring; 1302. Right clamping ring; 1303. Telescopic rod; 1304. Roller; 1305. Scraper; 14. Conveyor belt; 1401. Drive roller; 1402. Driven roller; 1403. Conveyor belt strip; 1404. Enclosure plate; 15. 1501 Fixed component; 1502 Connecting rod; 16. Wire pressing module; 1601 Hydraulic damping rod; 1602 Wire pressing baffle; 17. Pressure roller; 18. Torque eliminator; 1801 Fixed bushing; 1802 Rotating bearing; 1803 Torque ring; 1804 Hydraulic outlet; 1805 Hydraulic inlet; 1806 Elastic pressure rod; 1807 Clamping plate; 1808 Actuating plate; 1809 Rotating cavity; 19. Rear clamping component; 20. Direction detection component; 201 Mounting base; 202 Fixed connecting rod; 203 Detection outer ring; 204 Detection pointer; 205 Detection inner ring; 21. Hydraulic energy storage device. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] like Figure 1-9 As shown, an embodiment of this application provides a traction device for convenient cable laying, including a traction machine 1 and a cable conveyor. The cable conveyor includes a base plate 7, with a motor 9, a hydraulic energy storage tank 21, and a conveyor belt 14 at the top of the base plate 7. The motor 9 provides power to the conveyor belt 14 through a steering gear 8. A cable pressing assembly 15 is provided at the top of the conveyor belt 14. A front clamping assembly 13, a hydraulic rod 12, and a rear clamping assembly 19 with identical structures are provided at the front and rear of the conveyor belt 14. The front clamping assembly 13 includes symmetrically arranged left clamping rings. The left and right clamping rings 1301 and 1302 are respectively provided with a left hydraulic rod 1201 and a right hydraulic rod 1202 at their opposite ends. The inner walls of the left and right clamping rings 1301 and 1302 are provided with multiple telescopic rods 1303. The top of the telescopic rod 1303 is provided with a roller 1304 that rolls with the cable. A micro hydraulic pump is embedded in the roller 1304. A spiral scraper 1305 is provided at the front end of the left clamping ring 1301 and / or the right clamping ring 1302.

[0021] Specifically, the top surface of the base plate 7 has multiple pre-drilled mounting holes for assembling and fixing various components. The motor 9 is fixed to the top of the base plate 7. The steering gear 8 changes the transmission direction of the power output, transmitting the power of the motor 9 to the conveyor belt 14, ensuring that the conveyor belt 14 conveys the cable at a uniform speed along the length of the base plate 7. The conveyor belt 14 is installed on the top surface of the base plate 7. A wire pressing assembly 15 is installed above the conveyor belt 14. The wire pressing assembly 15 presses the cable downward to prevent slippage during conveying. The feed end of the conveyor belt 14 is equipped with a front clamping assembly 13, and the discharge end is equipped with a rear clamping assembly 19. A hydraulic rod 12 is installed on the outside of the front clamping assembly 13 to provide power for the opening and closing of the clamping ring.

[0022] The left clamping ring 1301 and the right clamping ring 1302 are arranged symmetrically on the left and right sides. When they are closed, they form a circular channel through which the cable can pass. The left hydraulic rod 1201 and the right hydraulic rod 1202 drive the left clamping ring 1301 and the right clamping ring 1302 to move horizontally respectively. The synchronous extension and retraction realizes the adjustment of the clamping channel aperture to adapt to cables with different outer diameter specifications.

[0023] Telescopic rods 1303 are evenly distributed along the inner circumference of the clamping ring. Each telescopic rod 1303 can extend and retract independently in the radial direction. Rollers 1304 are rotatably mounted on the top of the telescopic rods 1303. When the cable passes through the clamping channel, the rollers 1304 roll and contact the cable sheath. When the rollers 1304 rotate, they drive the miniature hydraulic pump embedded inside to work and pressurize the hydraulic accumulator 21. Spiral scrapers 1305 are fixedly installed on the inner wall of the front end of the clamping ring. The scrapers 1305 are spirally arranged along the cable conveying direction. During the forward conveying of the cable, the scrapers 1305 can scrape off the dirt attached to the surface of the cable.

[0024] Furthermore, the front clamping assembly 13 and the rear clamping assembly 19 are provided with clamping frames 11 at their bottom ends. The clamping frames 11 are fixed to the base plate 7 by bolts. A direction detection assembly 20 extends outward from the front end of the clamping frames 11. The direction detection assembly 20 includes a mounting base 201 extending outward from the base plate 7. A set of parallel fixed connecting rods 202 extends upward from the mounting base 201. A detection outer ring 203 is integrally connected to one end of the fixed connecting rods 202. A scale is provided on the end face of the detection outer ring 203. A detection inner ring 205 is installed in the detection outer ring 203 through a bearing. A detection pointer 204 is fixedly connected to the outer wall of the detection inner ring 205.

[0025] Specifically, the inner detection ring 205 is fitted onto the outside of the cable. The inner diameter of the inner detection ring 205 is larger than the outer diameter of the cable, so that there is no contact friction between the inner detection ring 205 and the cable. The inner detection ring 205 can rotate freely around the cable axis. When there is curling memory torsional stress inside the cable, the cable will generate a rotational tendency during its movement. This rotational tendency drives the inner detection ring 205 to rotate, and the detection pointer 204 deflects accordingly and points to the corresponding mark on the scale. The operator determines the direction of the cable torsional stress according to the clockwise and counterclockwise direction markings on the scale.

[0026] Furthermore, the conveyor belt 14 includes a set of parallel baffles 1404, with a drive roller 1401 and a driven roller 1402 arranged in parallel between the opposite faces of the two baffles 1404. The drive roller 1401 is fixedly connected to the output shaft of the steering gear 8 by a pin. The conveyor belt 1403 also includes a conveyor belt strip 1403 that wraps around the drive roller 1401 and the driven roller 1402.

[0027] Specifically, two baffles 1404 are located on both sides of the width direction of the conveyor belt 14 to fix the installation position of the conveyor belt 14. The drive roller 1401 rotates around its own axis under the drive of the motor 9. The drive roller 1401 drives the driven roller 1402 and the conveyor belt 1403 to operate synchronously, applying a forward conveying force to the cable placed on the conveyor belt 1403.

[0028] Furthermore, the conveyor belt 1403 is long and has a downward-concave arc-shaped section in the middle, the curvature of which is less than the outer diameter curvature of the cable.

[0029] Specifically, the arc-shaped structure confines the cable within the recessed area of ​​the conveyor belt 1403 during transport. Since the curvature of the arc-shaped section is less than the outer diameter curvature of the cable, the cable and the conveyor belt 1403 form a line contact rather than a point contact, which increases the contact area, improves the transport stability, and prevents the cable from rolling off the conveyor belt 14.

[0030] Furthermore, the pressure line assembly includes a fixing component 15 and a pressure line module 16. The fixing component 15 includes a plurality of fixing rods 1501 welded or screwed onto the enclosure plate 1404. A connecting rod 1502 is fixed between two fixing rods 1501 in the width direction. A pressure line module 16 is provided on the opposite side of the two connecting rods 1502 in the length direction. The pressure line module 16 includes a hydraulic damping rod 1601. A pressure line baffle 1602 is provided at the bottom end of the hydraulic damping rod 1601.

[0031] Specifically, the fixed rod 1501 provides a supporting base for the wire pressing assembly, the connecting rod 1502 connects the fixed rods 1501 in the width direction into one piece to ensure the structural rigidity of the wire pressing assembly in the width direction, and the hydraulic damping rod 1601 is used to adjust the height of the wire pressing baffle 1602 to accommodate cables with different outer diameters.

[0032] Furthermore, a pressure roller 17 that cooperates with the conveyor belt 1403 is provided between the opposite surfaces of the pressure baffle 1602. The pressure roller 17 is spindle-shaped, and the curvature of the pressure roller 17 on the vertical plane is the same as the curvature of the arc segment of the conveyor belt 1403.

[0033] Specifically, the hydraulic damping rod 1601 can adjust the height of the pressure baffle 1602, thereby allowing the pressure roller 17 to press the cable tightly within the arc-shaped section of the conveyor belt 1403 with appropriate pressure, ensuring stable contact between the cable and the conveyor belt 1403 during transport. The hydraulic damping rod 1601 has a built-in damping spring and hydraulic oil chamber, which can buffer and absorb the vibration generated during cable transport, preventing the pressure roller 17 from jumping off the cable surface due to vibration. The spindle-shaped structure of the pressure roller 17 ensures that the contact pressure between it and the cable is evenly distributed along the circumference of the cable, avoiding local squeezing damage to the cable.

[0034] Furthermore, the pressure assembly 15 also includes two torque eliminators 18 symmetrically arranged along the pressure roller 17. Each torque eliminator 18 includes a fixed bushing 1801. A set of symmetrically arranged rotating bearings 1802 are provided on the inner wall of the fixed bushing 1801. The opposite ends of the rotating bearings 1802 are provided with sealing rings integrally connected to the fixed bushing 1801. The area enclosed by the sealing rings constitutes a rotating cavity 1809. The outer wall of the fixed bushing 1801 is provided with a hydraulic inlet 1805 and a hydraulic outlet 1804 communicating with the outside. A torque ring 1803 is provided on the inner wall of the rotating bearings 1802.

[0035] Specifically, the torsion ring 1803 can rotate freely around its own axis under the support of the rotating bearing 1802. After the hydraulic oil enters the rotating cavity 1809 from the hydraulic inlet 1805, it pushes the actuating plate 1808, thereby driving the torsion ring 1803 to rotate. The hydraulic oil is discharged from the hydraulic outlet 1804, forming a hydraulic circuit. The sealing ring is used to prevent the hydraulic oil from leaking from the rotating cavity 1809 to the outside, ensuring the sealing of the hydraulic system.

[0036] Furthermore, the outer wall of the torsion ring 1803 is provided with a toggle plate 1808, and the inner wall of the torsion ring 1803 is provided with a plurality of elastic pressure rods 1806 in the circumferential direction, and a clamping plate 1807 is provided at the top of the elastic pressure rods 1806.

[0037] Specifically, the elastic pressure rod 1806 presses the clamping plate 1807 against the cable surface. Under the drive of the torsion ring 1803, the clamping plate 1807 applies a circumferential torsional force to the cable to counteract the cable's curling memory torsional stress. There are multiple actuating plates 1808, which are evenly distributed circumferentially along the outer wall of the torsion ring 1803 to improve the transmission efficiency of the hydraulic drive torque. There are multiple elastic pressure rods 1806, which are evenly distributed circumferentially along the inner wall of the torsion ring 1803, so that the clamping force of the clamping plate 1807 on the cable surface is evenly distributed circumferentially.

[0038] Furthermore, the tractor 1 includes a chassis, a diesel engine 2 on the chassis, a set of tracks 3 arranged opposite each other at the lower end of the chassis, a steering wheel 4 for controlling direction and a seat 5 for riding on the chassis, and a traction clamp 6 at the rear end of the chassis.

[0039] Specifically, the rear end of the chassis is equipped with a three-point suspension device for mounting the towing clamp 6, the diesel engine 2 is used to provide power output for the towing machine 1, the track 3 is used to support the overall weight of the towing machine and drive the towing machine to move under the drive of the diesel engine 2, the steering wheel 4 is used to control the steering angle of the track 3 to change the direction of travel of the towing machine, and the seat 5 is used for the operator to sit and operate the towing machine 1.

[0040] Furthermore, the traction clamp 6 includes a scissor bracket 601 hinged to the machine body. The lower end of the scissor bracket 601 is provided with a hollow sliding sleeve 603. A through hole communicating with the inside and outside is opened on the sliding sleeve 603. Symmetrically arranged sliding rods 602 are provided inside the sliding sleeve 603. The sliding rods 602 are connected and confined within the sliding sleeve 603 by springs 604. The sliding rods 602 are connected to the scissor bracket 601 through hinged connecting rods. Symmetrical clamps 605 are hinged to the lower end of each sliding rod 602.

[0041] Specifically, the scissor lift bracket 601 can drive the slide bar 602 to slide within the sliding sleeve 603, thereby opening or closing the clamp 605 to clamp or release the cable. The spring 604 is used to provide clamping force to ensure that the clamp 605 maintains reliable clamping of the cable during flight. The through hole ensures that the air pressure inside and outside the sliding sleeve 603 is balanced, preventing the slide bar 602 from getting stuck due to air pressure resistance during sliding.

[0042] The working principle of this application is as follows: When laying cables, the operator places one end of the cable between two clamps 605. The scissor lift bracket 601 drives the slide bar 602 to slide within the sliding sleeve 603, causing the clamps 605 to close. The spring 604 is compressed and provides clamping force to clamp the cable. After the traction machine 1 starts, it drags the cable to be laid forward and transports the cable to the target position. After reaching the target position, the operator uses the three-point suspension device installed at the rear of the traction machine 1 to lower the traction clamp 6 to the ground. Then, the scissor lift bracket 601 moves in the opposite direction, causing the slide bar 602 to slide outward, the clamps 605 to open, and the cable is released. At the same time, the ground cable feeder works synchronously during the transportation process of the traction machine 1.

[0043] After the cable enters the cable feeder, it first passes through the inner detection ring 205 of the direction detection component 20. At this time, the inner detection ring 205 is in a free state. When there is curling memory torsional stress inside the cable, the cable will generate a slight rotational tendency during its forward movement. Driven by this rotational tendency, the inner detection ring 205 rotates freely around the cable axis. The detection pointer 204 fixed on the outer wall of the inner detection ring 205 deflects accordingly, pointing to the corresponding direction on the scale on the end face of the outer detection ring 203. The operator observes the deflection direction of the detection pointer 204 to determine whether the current curling memory torsional stress of the cable is clockwise or counterclockwise, and then adjusts the flow direction of the valve on the torque eliminator 18.

[0044] Subsequently, the cable enters the front clamping assembly 13, and the left hydraulic rod 1201 and the right hydraulic rod 1202 extend synchronously, driving the left clamping ring 1301 and the right clamping ring 1302 to approach each other until they close, clamping the cable in the clamping hole. The extension rod 1303 adjusts the extension length according to the outer diameter of the cable, so that the rolling surface of the roller 1304 maintains appropriate contact pressure with the cable surface. During the cable travel, the roller 1304 rotates around its own axis, and the rotating shaft of the roller 1304 drives the rotor of the micro hydraulic pump to rotate synchronously. The micro hydraulic pump draws in low-pressure oil and pressurizes it before discharging it, converting mechanical energy into hydraulic energy. The high-pressure oil discharged by the micro hydraulic pump is transported to the hydraulic energy storage device 21 for storage through the hydraulic pipeline. The oil outlet of the hydraulic energy storage device 21 is connected to the hydraulic inlet 1805 of the torque eliminator 18 through the hydraulic pipeline.

[0045] Before the cable enters the clamping assembly 13, the operator, based on the direction of the cable torsional stress detected by the direction detection assembly 20, controls the direction of the high-pressure oil released from the hydraulic energy storage unit 21 into the hydraulic inlet 1805 by adjusting the reversing valve on the hydraulic line. After the high-pressure oil enters the rotating cavity 1809, it pushes the actuating plate 1808. The actuating plate 1808 drives the torsion ring 1803 to rotate around its own axis under the support of the rotating bearing 1802, thereby controlling the rotation direction of the torsion ring 1803. The rotation direction of the torsion ring 1803 is configured to be opposite to the direction of the cable's curling memory torsional stress. When the torsion ring 1803 rotates, the elastic pressure rod 1806 drives the clamping plate 1807 to rotate synchronously. The clamping plate 1807 applies a circumferential torsional force to the cable surface. This torsional force is opposite to the direction of the cable's internal curling memory torsional stress, and the two cancel each other out within the cable cross-section.

[0046] During the rotation of the torsion ring 1803, the low-pressure oil in the rotating cavity 1809 is discharged from the hydraulic outlet 1804 and flows back to the suction port of the micro hydraulic pump through the return oil pipeline, forming a closed hydraulic circuit. Since the rotation speed of the roller 1304 is proportional to the cable travel speed, the output flow rate of the micro hydraulic pump is proportional to the rotation speed of the roller 1304, the flow rate of the hydraulic oil entering the hydraulic energy storage 21 is proportional to the cable travel speed, and the rotation speed of the torsion ring 1803 is proportional to the flow rate of the hydraulic oil released by the hydraulic energy storage 21, the torsional torque applied by the torsion ring 1803 to the cable is positively correlated with the cable travel speed.

[0047] After the cable passes through the front clamping assembly 13, it enters the conveyor belt 14. The motor 9 drives the drive roller 1401 to rotate via the steering gear 8. The drive roller 1401 drives the conveyor belt 1403 to rotate in a cycle. The cable is placed in the arc-shaped section of the conveyor belt 1403 and moves forward under the friction of the conveyor belt 1403. The hydraulic damping rod 1601 in the wire pressing assembly adjusts the extension length according to the outer diameter of the cable, so that the pressure roller 17 presses the upper surface of the cable with appropriate pressure. The pressure roller 17 cooperates with the arc-shaped section of the conveyor belt 1403 to clamp the cable between the two. The spindle shaft structure of the pressure roller 17 makes the contact pressure with the cable evenly distributed along the cable axis. The hydraulic damping rod 1601 simultaneously buffers and absorbs the vibration generated during the cable conveying process, maintaining stable contact between the pressure roller 17 and the cable.

[0048] After the cable exits from the conveyor belt 14, it enters the rear clamping assembly 19. The structure of the rear clamping assembly 19 is the same as that of the front clamping assembly 13, and its working process is the same as that of the front clamping assembly 13. The roller 1304 in the rear clamping assembly 19 also rotates under the drive of the cable and drives the micro hydraulic pump to work. The high-pressure oil output by the micro hydraulic pump is stored in the corresponding hydraulic energy storage device 21. The hydraulic energy storage device 21 releases the high-pressure oil to drive the torque eliminator 18 corresponding to the rear clamping assembly 19 to work, and applies a reverse torsional torque to the cable again to ensure that the internal torsional stress of the cable has been fully eliminated when it leaves the cable conveyor.

[0049] During the continuous travel of the cable, the spiral scraper 1305 located at the front end of the left clamping ring 1301 and the right clamping ring 1302 continuously cleans the cable surface, scraping off the floating dust and loose attachments on the cable surface. The scraped debris is guided to the outside of the clamping ring and discharged along the spiral direction of the scraper 1305.

[0050] Unless otherwise stated or contradictory, the terms or phrases used in this application have the following meanings: In this application, "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features; thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature; in this application, "one or more" refers to any one, any two, or any two or more of the listed items; wherein, "more than" refers to any two or more; in this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicate direction. The positions or positions shown in the accompanying drawings are for the purpose of facilitating and simplifying the description of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A traction device for convenient cable laying, comprising a traction machine and a cable feeder, characterized in that, The cable conveyor includes a base plate, with a motor, a hydraulic energy storage device, and a conveyor belt at the top. The motor provides power to the conveyor belt via a steering mechanism. A cable pressing assembly is located at the top of the conveyor belt. A front clamping assembly, a hydraulic rod, and a rear clamping assembly with identical structures are located at the front and rear of the conveyor belt. The front clamping assembly includes a symmetrically arranged left clamping ring and a right clamping ring. A left hydraulic rod and a right hydraulic rod are respectively located at opposite ends of the left and right clamping rings. Multiple telescopic rods are arranged circumferentially on the inner walls of the left and right clamping rings. A roller that rolls with the cable is located at the top of the telescopic rod, and a miniature hydraulic pump is embedded in the roller. A spiral scraper is located at the front end of the left and right clamping rings.

2. The traction device for facilitating cable laying according to claim 1, characterized in that: The front clamping assembly and the rear clamping assembly are provided with clamping frames at their bottom ends. The clamping frames are fixed to the base plate by bolts. A direction detection assembly extends outward from the front end of the clamping frame. The direction detection assembly includes a mounting base extending outward from the base plate. A set of parallel fixed connecting rods extends upward from the mounting base. A detection outer ring is integrally connected to one end of the fixed connecting rods. A scale is provided on the end face of the detection outer ring. A detection inner ring is installed inside the detection outer ring through a bearing. A detection pointer is fixedly connected to the outer wall of the detection inner ring.

3. The traction device for facilitating cable laying according to claim 2, characterized in that: The conveyor belt includes a set of parallel baffles, with a drive roller and a driven roller arranged in parallel axes between the opposite faces of the two baffles. The drive roller is fixedly connected to the output shaft of the steering gear by a pin, and also includes a conveyor belt strip that wraps around the drive roller and the driven roller.

4. The traction device for facilitating cable laying according to claim 3, characterized in that: The conveyor belt is long and has a downward-curved arc section in the middle, the curvature of which is less than the outer diameter curvature of the cable.

5. The traction device for facilitating cable laying according to claim 4, characterized in that: The pressure line assembly includes a fixing component and a pressure line module. The fixing component includes multiple fixing rods welded or screwed to the enclosure plate. A connecting rod is fixed between two fixing rods in the width direction. A pressure line module is provided on the opposite side of the two connecting rods in the length direction. The pressure line module includes a hydraulic damping rod and a pressure line baffle is provided at the bottom end of the hydraulic damping rod.

6. The traction device for facilitating cable laying according to claim 5, characterized in that: A pressure roller that cooperates with the conveyor belt is provided between the opposite surfaces of the pressure baffle. The pressure roller is spindle-shaped, and the curvature of the pressure roller on the vertical plane is the same as the curvature of the arc segment of the conveyor belt.

7. The traction device for facilitating cable laying according to claim 6, characterized in that: The pressure assembly also includes two torque eliminators symmetrically arranged along the pressure roller. Each torque eliminator includes a fixed bushing, and a set of symmetrically arranged rotating bearings are provided on the inner wall of the fixed bushing. The opposite ends of the rotating bearings are provided with sealing rings integrally connected to the fixed bushing. The area enclosed by the sealing rings constitutes a rotating cavity. The outer wall of the fixed bushing is provided with a hydraulic inlet and a hydraulic outlet communicating with the outside. A torque ring is provided on the inner wall of the rotating bearing.

8. The traction device for facilitating cable laying according to claim 7, characterized in that: The outer wall of the torsion ring is provided with a toggle plate, and the inner wall of the torsion ring is provided with multiple elastic pressure rods in the circumferential direction, with a clamping plate at the top of the elastic pressure rod.

9. The traction device for facilitating cable laying according to claim 8, characterized in that: The tractor includes a chassis, a diesel engine mounted on the chassis, a set of tracks arranged in pairs at the lower end of the chassis, a steering wheel for controlling direction and a seat for riding on the chassis, and a towing clamp at the rear end of the chassis.

10. The traction device for facilitating cable laying according to claim 9, characterized in that: The process includes the following steps: The traction clamp includes a scissor bracket hinged to the machine body. The lower end of the scissor bracket is provided with a hollow sliding sleeve. A through hole communicating with the inside and outside is opened on the sliding sleeve. Symmetrically arranged sliding rods are provided inside the sliding sleeve. The sliding rods are connected and confined within the sliding sleeve by springs. The sliding rods are connected to the scissor bracket by hinged connecting rods. Symmetrical clamps are hinged to the lower end of each sliding rod.

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